BMS 12CN860

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
• Frequency response 40 - 22000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 4.50
• Electrical quality factor QES 0.23
• Total quality factor QTS 0.22

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 202cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.7Ω
• Inductance (1kHz) LE 0.89mH
• VC Diameter 101.6mm
• Winding height HVC 19mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 2T
• Force factor Bl 24.2N/A
• Motor constant Bl/√RE 10.1N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 239mm
• Effective area SD 449cm²
• Moving mass MMS 72g
• Moving mass (without air load) MMD 64.7g
• Material Polyester

Suspensions

• Stiffness KMS 7.69N/mm
• Compliance CMS 130µm/N
• Equivalent volume to the compliance VAS 37L
• Mechanical resistance RMS 5.23N·s/m

Dimensions

• Nominal diameter 12″
• 318mm
• Overall diameter 318mm
• Baffle cutout diameter 284mm
• Overall depth 263mm
• Volume occupied by the driver (estimated) 5L
• Net weight 8.55kg
• Frame material Cast Aluminum